The 080 has more filter area than the regular 060 WRX filter, despite the external size. It's in the service manual.ValvetrainEngineer said:I've always read larger filters = more area to trap particles = lower pressure drop across the mesh = better flow rate.
I'm very skeptical until I see it for myself. Why produce a larger filter with less filtration area? If the '080 is better for the STi, then it's better for the WRX too. Then they should ditch the '060 part and save some internal cost. I've already dissected my '080, next I'll chop up the '060 to compare.RDiamond said: